Core Java - Interview Questions and Answers for 'Derived class' | Search Java Interview Question - javasearch.buggybread.com
Javasearch.buggybread.com

Search Interview Questions


 More than 3000 questions in repository.
 There are more than 900 unanswered questions.
Click here and help us by providing the answer.
 Have a video suggestion.
Click Correct / Improve and please let us know.
Label / Company      Label / Company / Text

   



Core Java - Interview Questions and Answers for 'Derived class' - 2 question(s) found - Order By Newest

 Q1. Difference between Base Class, Derived Class , Abstract Class and Concrete Class ?Core Java2019-01-20 10:09:38

Ans. Base Class is a relative term used to signify the Parent class in Parent - Child or Base - derived relationship.

Derived Class is a relative term used to signify the Child class in Parent - Child or Base - derived relationship.

Abstract Class is a class that is not allowed to be instantiated and hence can serve only a base class for it's usage.

Concrete Class is the class which is supposed to be instantiated and hence provide definition for all implementing interface methods and extending abstract methods.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     Base Class   Derived Class    Abstract Class   Concrete Class


Related Questions

  Differences between abstract class and interface ?
  Difference between Abstract and Concrete Class ?
 If an Abstract class has only abstract methods, What's the difference between such a class and an interface ?
  What are the design considerations while making a choice between using interface and abstract class ?
  How is Abstraction implemented in Java ?
 What is an abstract class ?
  Shall we use abstract classes or Interfaces in Policy / Strategy Design Pattern ?
  Will this code Work ? If not , Why ?
  Is java.util.Date an abstract Class ? Is java.util.Calendar an abstract Class ?


Must know at all levels. Among Top 10 frequently asked questions in Java. Very frequently asked to fresh graduates or less experienced professionals.
  Q2. What is Inheritance ?Core Java

Ans. Its a facility for code reuse and independent extension wherein a derived class inherits the properties of parent class.

 Help us improve. Please let us know the company, where you were asked this question :   

   Like         Discuss         Correct / Improve     inheritance  object oriented programming (oops)  oops concepts  oops concepts  java concepts  code reuse  code re-use   classes  derived classes     Asked in 14 Companies      basic        frequent


Related Questions

  Why do we need Inner classes ? Cant we just work with outer classes wherever we implement Inner classes ?
 What are different types of classes ?
  Differences between abstract class and interface ?
 What is the difference between the following two code lines ?

1. new OuterClass().new InnerClass();

2. new OuterClass.InnerClass();
  What is a stream and what are the types of Streams and classes of the Streams?
 Which of the following can be marked static ?

a. Methods , Variables and Initialization Blocks.
b. Methods , Variables , Initialization Blocks and Outer Classes and nested Classes.
c. Methods , Variables , Initialization Blocks and Outer Classes.
d. Methods , Variables , Initialization Blocks and nested Classes
 What are the factors on which price classes are based on in case of EC2, S3, CloudFront and EBS ?
  What are the different types of inner classes ?
  What are the Wrapper classes available for primitive types ?
  What are wrapper classes ?



Help us and Others Improve. Please let us know the questions asked in any of your previous interview.

Any input from you will be highly appreciated and It will unlock the application for 10 more requests.

Company Name:
Questions Asked: